51单片机 数码动态显示

#include

#include

#define uchar unsigned char

#define uint unsigned int

#define SEGP0

sbit latch1=P2^7;//段驱动锁存信号

sbit latch2=P2^6;//位驱动锁存信号

uchar code DSY_CODE[]=

{

0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f

};

void DelayMS(uint x)

{

uchar t;

while(x--)

{

for(t=120;t>0;t--);

}

}

void main()

{

uchar i=0;

uchar display[4];

uchar bit_com = 0x01;

display[0]=DSY_CODE[2];

display[1]=DSY_CODE[0];

display[2]=DSY_CODE[1];

display[3]=DSY_CODE[2];

while(1)

{

P0=display[i];//段控制

latch1=1;

latch1=0;

P0=~bit_com;//位选通控制

latch2=1;

latch2=0;

DelayMS(4);

i++;

bit_com = bit_com<<1;

if(i==4)

i=0;

if(bit_com == 0x10)

bit_com =0x01;

}

}